<template>
	<div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import * as echarts from 'echarts';
require('echarts/theme/macarons'); // echarts theme
import resize from './mixins/resize';

export default {
	mixins: [resize],
	props: {
		className: {
			type: String,
			default: 'chart',
		},
		width: {
			type: String,
			default: '100%',
		},
		height: {
			type: String,
			default: '350px',
		},
		autoResize: {
			type: Boolean,
			default: true,
		},
		chartData: {
			type: Object,
			required: true,
		},
	},
	data() {
		return {
			chart: null,
		};
	},
	watch: {
		chartData: {
			deep: true,
			handler(val) {
				this.setOptions(val);
			},
		},
	},
	mounted() {
		this.$nextTick(() => {
			this.initChart();
		});
	},
	beforeDestroy() {
		if (!this.chart) {
			return;
		}
		this.chart.dispose();
		this.chart = null;
	},
	methods: {
		initChart() {
			this.chart = echarts.init(this.$el, 'macarons');
			this.setOptions(this.chartData);
		},
		setOptions({ expectedData, actualData } = {}) {
			this.chart.setOption({
				xAxis: {
					data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
					boundaryGap: false,
					axisTick: {
						show: false,
					},
				},
				grid: {
					left: 10,
					right: 10,
					bottom: 20,
					top: 30,
					containLabel: true,
				},
				tooltip: {
					trigger: 'axis',
					axisPointer: {
						type: 'cross',
					},
					padding: [5, 10],
				},
				yAxis: {
					axisTick: {
						show: false,
					},
				},
				legend: {
					data: ['expected', 'actual'],
				},
				series: [
					{
						name: 'expected',
						itemStyle: {
							normal: {
								color: '#FF005A',
								lineStyle: {
									color: '#FF005A',
									width: 2,
								},
							},
						},
						smooth: true,
						type: 'line',
						data: expectedData,
						animationDuration: 2800,
						animationEasing: 'cubicInOut',
					},
					{
						name: 'actual',
						smooth: true,
						type: 'line',
						itemStyle: {
							normal: {
								color: '#3888fa',
								lineStyle: {
									color: '#3888fa',
									width: 2,
								},
								areaStyle: {
									color: '#f3f8ff',
								},
							},
						},
						data: actualData,
						animationDuration: 2800,
						animationEasing: 'quadraticOut',
					},
				],
			});
		},
	},
};
</script>
